No scripture makes God into anything. Scripture comes from God, not the other way around, and does not cause God to be or do anything.
John 14:14 does not imply that God a vending machine because we understand it in light of the other 31,000 verses in the Bible, including the verses in the Epistle of James about asking rightly.
You desire and do not have; so you kill. And you covet and cannot obtain; so you fight and wage war. You do not have, because you do not ask. You ask and do not receive, because you ask wrongly, to spend it on your passions. (James 4:2-3)
John 14:14 was addressed to the twelve. Jesus was speaking to the leaders of his Church. He says that they have to ask “in my name” and the very next verse is “If you love me, you will keep my commandments.” There are conditions to what we ask for.
Reality also proves that God is not a vending machine. I still don’t have the burgundy Z06 Corvette.
-Tim-